If I had a dozen "Work" servers with just PHP-FPM (with other Nginx servers in front), is it possible to setup PHP to store user uploaded files on a different server?
I'm looking to avoid syncing user files on each "Work" server. I want to keep user uploaded files on an isolated server. With files that need to be accessible to the public, they could be distributed through a CDN.
I have several reasons for wanting to do this:
1) The sum file-size of all the uploaded files are several GB. 99% of them are jpg/png/pdf, but there are thousands of them. If I add another "Work" server, I'd rather not sync those files to another server. These "Work" servers should only contain the application code and do the work.
2) From a security standpoint, I don't want user uploaded files on these servers.
So I basically want to avoid writing these files on the hard drives of the "Work" servers.
What options do I have, if any?